A percutaneous catheter system for use within the human body and an ablation catheter for ablating a selected tissue region within the body of a subject. The percutaneous catheter system can include two catheters that are operatively coupled to one another by magnetic coupling through a tissue structure. The ablation catheter can include electrodes positioned within a central portion. The ablation catheter is positioned such that the central portion of a flexible shaft at least partially surrounds the selected tissue region. Each electrode of the ablation catheter can be activated independently to apply ablative energy to the selected tissue region. The ablation catheter can employ high impedance structures to change the current density at specific points. Methods of puncturing through a tissue structure using the percutaneous catheter system are disclosed. Also disclosed are methods for ablating a selected tissue region using the ablation catheter.

A drug delivery robot is provided. The drug delivery robot comprises: a storage space in which a drug is stored; a first accommodation unit formed at the front of the storage space along a first direction; an outlet by which the first accommodation unit communicates with the outside; a body having a first communication hole by which the storage space communicates with the first accommodation unit; a front rotational magnet which is located in the first accommodation unit and has a central axis arranged in a second direction perpendicular to the first direction; a first fixed magnet which is fixedly coupled to one side of the body in the rear of the front rotational magnet; and a second fixed magnet which is fixedly coupled to the other side of the body while having the storage space between the first fixed magnet and the second magnet and is arranged to face polarities different from those of the first fixed magnet, wherein the front rotational magnet can selectively rotate around an axis of the first direction or the second direction by means of an external magnetic field control, the body rotates together around the axis of the first direction when the front rotational magnet rotates around the axis of the first direction, the front rotational magnet opens or closes the first communication hole by means of the magnetic force with the first fixed magnet and the second fixed magnet when the front rotational magnet rotates around the axis of the second direction.

A microrobot is disclosed. The microrobot comprises: a rotating shaft; a main magnet fixed and coupled to the rotating shaft; a first support body which is inserted into the rotating shaft and which is rotatable around the rotating shaft; a first driving magnet which is fixed and coupled to the first support body and which has a magnetic moment differing, in size, from that of the main magnet; and a plurality of first legs coupled to the outer circumferential surface of the first support body.

A navigation system or combination of navigation systems can be used to provide one or more navigation modalities to track a position and navigate a single instrument in a volume. For example, both an Electromagnetic (EM) and Electropotential (EP) navigation system can be used to navigate an instrument within the volume. The two navigation systems may be used separately to selectively individually navigate the single instrument in the volume. Disclosed are also systems and processes to determine a shape of the single instrument either alone or in combination with the position of the instrument. The instrument may be navigated with the addition of tracking devices or with native or inherent portions of the instrument.

A magnetic drive system is disclosed. The magnetic drive system comprises: a first magnetic field generation unit; a second magnetic field generation unit which is disposed under the first magnetic field generation unit in a Z-axis direction with an operation area interposed therebetween, and generates a magnetic field in the operation area in combination with the first magnetic field generation unit; and a moving module for moving at least one of the first magnetic field generation unit and the second magnetic field generation unit.

The present disclosure relates to a dual hybrid electromagnet module for controlling a microrobot. More specifically, the present disclosure relates to an electromagnetic field system in which a dual hybrid electromagnet module including a permanent magnet and an electromagnet is used for controlling a microrobot so that it is possible to reduce the number of used electromagnets so as to reduce power consumption and the amount of heat generated from the electromagnet module. The electromagnetic field system is capable of being used for various medical procedures and surgeries using a microrobot.

A tissue resection device includes a handpiece and an end effector assembly. The end effector assembly includes an outer shaft defining a window, an inner shaft rotationally disposed within the outer shaft and operably coupled to the handpiece for rotating the inner shaft relative to the outer shaft, a cutting element disposed at a distal end portion of the inner shaft within the outer shaft and rotatable with the inner shaft, and at least one electromagnetic induction coil surrounding at least a portion of the cutting element. The cutting element is formed at least partially from a ferromagnetic material capable of being inductively heated and the at least one electromagnetic induction coil is adapted to connect to a source of energy to produce an electromagnetic field within the at least one electromagnetic induction coil to thereby inductively heat the cutting element.

The present invention relates to a micro-robot control apparatus. An electromagnetic module for focusing magnetic field and a micro-robot control apparatus comprising the electromagnetic module, according to the present invention, focus the magnetic field in an area of interest where focusing of same is desired to allow a micro-robot to be controlled, and, the apparatus having been simplified, allow efficient setup and operation in the surgery area. Moreover, the number of electromagnets is reduced to thus reduce the number of sources of power, thereby resulting in efficient operation of the apparatus with lowered power consumption. Additionally, by means of a magnetic induction frequency signal reception coil of the micro-robot and the external micro-robot control apparatus equipped with a magnetic induction transmission coil, the micro-robot control apparatus can both generate power wirelessly for the micro-robot, and implementation location recognition of same due to the efficiency of the generated power.

A system (10) for moving an intravascular medical device (85) in a vascular network (V) comprises a magnetic actuator (40), a controlling unit (50) and a controlling line driver (60). The controlling line driver (60) is adapted to hold and/or to release a controlling line (70) attached to the medical device (85) at different speeds. The magnetic actuator is adapted to generate a magnetic field (41) at a predetermined location in order to pull the medical device (85) in a pre-determined direction. The controlling unit (50) is adapted to balance at least three forces applied on the medical device (85) and to operate the magnetic actuator (40) and/or the controlling line driver (60).

A field generator includes multiple planar coils that are arranged in a single plane. At least two of the coils are non-concentric and are wound around respective axes that are not parallel with one another, so as to generate respective magnetic fields that are not parallel with one another.